A coworker of mine just discovered a really interesting fact: if you put a Blu-Ray disc into a Mac, you can watch it if you use VLC (www.videolan.org). I haven't personally tried it myself, but if this is true, that would be awesome!
Well, yes, but you left out a couple of steps. You first have to decrypt it with Make MKV, then you can watch the disc with VLC. Soon you'll be able to do it with Plex, too.